/* ============================
   国学风水分析 - 官网样式
   ============================ */
:root {
  --bg-dark: #0b1e14;
  --bg-card: #10281d;
  --bg-card2: #173526;
  --border: #335f4f;
  --accent: #2a6b52;
  --accent-light: #5cb88a;
  --text: #e9e1c9;
  --text-muted: #a7b5ac;
  --text-dim: #7a8f83;
  --danger: #f29b9b;
  --max-width: 1100px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
}
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
a { color: var(--accent-light); text-decoration: none; }
a:hover { filter: brightness(1.2); }
img { max-width: 100%; height: auto; }

/* Navbar */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,30,20,0.95); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo { font-size: 20px; font-weight: 700; color: var(--text) !important; letter-spacing: 1px; display: flex; align-items: center; gap: 8px; }
.logo-icon { width: 28px; height: 28px; border-radius: 4px; }
.navbar nav { display: flex; gap: 24px; }
.navbar nav a { color: var(--text-muted); font-size: 14px; transition: color 0.2s; }
.navbar nav a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(180deg, #0b1e14 0%, #0f2a1e 40%, #142f20 100%);
}
.hero-content { max-width: 720px; margin: 0 auto; }
.hero h1 { font-size: 42px; line-height: 1.2; margin-bottom: 16px; color: #fff; }
.hero-sub { font-size: 16px; color: var(--text-muted); margin-bottom: 32px; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 28px; border-radius: 10px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all 0.2s; border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent); color: #fff !important; border-color: var(--accent-light);
}
.btn-primary:hover { background: #2f8a6a; }
.btn-outline {
  background: transparent; color: var(--text) !important; border-color: var(--border);
}
.btn-outline:hover { background: var(--bg-card2); }
.btn-sm { padding: 8px 18px; font-size: 13px; border-radius: 8px; }
.btn-disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.text-center { text-align: center; margin-top: 32px; }

/* Sections */
.section-title {
  font-size: 28px; text-align: center; margin-bottom: 40px; color: #fff;
}

/* Features */
.features { padding: 60px 0; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px; transition: transform 0.2s, border-color 0.2s;
}
.feature-card:hover { transform: translateY(-3px); border-color: var(--accent-light); }
.feature-icon { font-size: 36px; margin-bottom: 12px; }
.feature-card h3 { font-size: 17px; margin-bottom: 8px; color: #fff; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Download Preview */
.download-preview { padding: 60px 0; background: #0f2a1e; }
.platform-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.platform-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px 24px; text-align: center;
}
.platform-icon { font-size: 42px; margin-bottom: 12px; }
.platform-card h3 { font-size: 17px; margin-bottom: 8px; }
.platform-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }

/* Articles */
.articles { padding: 60px 0; }
.article-list { display: flex; flex-direction: column; gap: 20px; }
.article-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px;
}
.article-card h3 { font-size: 18px; margin-bottom: 6px; }
.article-card h3 a { color: var(--text) !important; }
.article-card h3 a:hover { color: var(--accent-light) !important; }
.article-meta { font-size: 12px; color: var(--text-dim); margin-bottom: 8px; }
.article-card p { font-size: 14px; color: var(--text-muted); }

/* Footer */
.footer { padding: 40px 0 20px; border-top: 1px solid var(--border); background: #081710; }
.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px; margin-bottom: 24px;
}
.footer-section h4 { font-size: 15px; margin-bottom: 10px; color: #fff; }
.footer-section p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.footer-section ul { list-style: none; }
.footer-section ul li { margin-bottom: 6px; }
.footer-section ul li a { font-size: 13px; color: var(--text-dim); }
.footer-section ul li a:hover { color: var(--text); }
.footer-bottom { padding-top: 16px; border-top: 1px solid var(--border); text-align: center; }
.footer-bottom p { font-size: 12px; color: var(--text-dim); }

/* Download Page */
.page-hero { padding: 48px 0 32px; }
.page-hero h1 { font-size: 32px; margin-bottom: 8px; }
.page-hero p { color: var(--text-muted); }
.version-info { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 16px; }
.version-info .tag {
  padding: 4px 12px; border-radius: 20px; font-size: 12px;
  background: var(--bg-card2); border: 1px solid var(--border);
}
.download-grid { padding: 40px 0; }
.download-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px; margin-bottom: 20px;
}
.download-card .card-header {
  display: flex; align-items: center; gap: 16px; margin-bottom: 16px;
}
.download-card .card-header .icon { font-size: 36px; }
.download-card .card-header h2 { font-size: 20px; }
.file-info { font-size: 13px; color: var(--text-dim); margin-bottom: 16px; }
.file-info span { margin-right: 20px; }
.release-notes { margin-top: 12px; }
.release-notes h4 { font-size: 14px; margin-bottom: 8px; color: var(--text-muted); }
.release-notes ul { padding-left: 18px; font-size: 13px; color: var(--text-dim); }
.release-notes ul li { margin-bottom: 4px; }

/* Blog Page */
.blog-list { padding: 40px 0; }
.blog-list .article-card { margin-bottom: 0; }
.page-header { padding: 40px 0 20px; }
.page-header h1 { font-size: 28px; margin-bottom: 8px; }
.page-header p { color: var(--text-muted); font-size: 14px; }

/* Blog Article */
.blog-article { padding: 32px 0; }
.blog-article article { max-width: 760px; margin: 0 auto; }
.blog-article h1 { font-size: 30px; margin-bottom: 10px; }
.blog-article .meta { font-size: 13px; color: var(--text-dim); margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.blog-article h2 { font-size: 22px; margin: 28px 0 12px; }
.blog-article h3 { font-size: 18px; margin: 20px 0 10px; }
.blog-article p { font-size: 15px; margin-bottom: 14px; line-height: 1.8; color: #dcd5c0; }
.blog-article blockquote {
  border-left: 3px solid var(--accent-light); padding: 12px 16px; margin: 16px 0;
  background: var(--bg-card2); border-radius: 0 8px 8px 0; color: var(--text-muted); font-style: italic;
}

/* Auth Pages */
.auth-page { padding: 60px 0; min-height: 70vh; }
.auth-card {
  max-width: 500px; margin: 0 auto;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 32px 28px;
}
.auth-card h2 { font-size: 22px; margin-bottom: 6px; text-align: center; }
.auth-card .subtitle { font-size: 13px; color: var(--text-muted); text-align: center; margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg-card2);
  color: var(--text); font-size: 14px; outline: none;
  box-sizing: border-box;
}
.form-group input:focus, .form-group select:focus {
  border-color: var(--accent-light);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; }
.form-actions .btn { flex: 1; justify-content: center; }
.form-result {
  margin-top: 16px; padding: 12px; border-radius: 8px;
  font-size: 13px; white-space: pre-wrap; min-height: 40px;
  background: var(--bg-card2); border: 1px solid var(--border);
}
.form-result.success { border-color: var(--accent-light); color: var(--accent-light); }
.form-result.error { border-color: var(--danger); color: var(--danger); }
.loading-spinner {
  display: inline-block; width: 18px; height: 18px;
  border: 2px solid var(--border); border-top-color: var(--accent-light);
  border-radius: 50%; animation: spin 0.6s linear infinite;
  vertical-align: middle; margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* History table */
.history-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 12px; }
.history-table th, .history-table td {
  padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border);
}
.history-table th { color: var(--text-muted); font-weight: 500; }
.history-table td { color: var(--text-dim); }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 28px; }
  .navbar nav { gap: 12px; }
  .navbar nav a { font-size: 13px; }
  .footer-content { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .platform-cards { grid-template-columns: 1fr; }
  .download-card .card-header { flex-direction: column; text-align: center; }
}